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80224-89-1

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80224-89-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 80224-89-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,2,2 and 4 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 80224-89:
(7*8)+(6*0)+(5*2)+(4*2)+(3*4)+(2*8)+(1*9)=111
111 % 10 = 1
So 80224-89-1 is a valid CAS Registry Number.

80224-89-1Downstream Products

80224-89-1Relevant articles and documents

Synthesis of 2,5-Disubstituted Oxazoles from Arylacetylenes and α-Amino Acids through an i 2 /Cu(NO 3) 2 ?3H 2 O-Assisted Domino Sequence

Wang, Jungang,Cheng, Yan,Xiang, Jiachen,Wu, Anxin

supporting information, p. 743 - 747 (2019/03/26)

A new strategy has been developed for the synthesis of 2,5-disubstituted oxazoles from easily available arylacetylenes and α-amino acids in the presence of Cu(NO 3) 2 ?3H 2 O and iodine. This reaction process involves the I 2 /Cu(NO 3) 2 ?3H 2 O-assisted transformation of arylacetylene to α-iodo acetophenone, Kornblum oxidation to phenylglyoxal, condensation to imine, decarboxylation/annulation/oxidation reaction sequence to approach 2,5-disubstituted oxazoles.

Synthesis of 2,5-disubstituted oxazoles: Via cobalt(III)-catalyzed cross-coupling of N -pivaloyloxyamides and alkynes

Yu, Xiaolong,Chen, Kehao,Wang, Qi,Zhang, Wenjing,Zhu, Jin

supporting information, p. 1197 - 1200 (2018/02/09)

An efficient synthesis of 2,5-disubstituted oxazoles via Co(iii) catalysis is described herein. The synthesis is achieved under mild conditions through [3+2] cycloaddition of N-pivaloyloxyamides and alkynes. The reaction operates through an internal oxidation pathway and features a very broad substrate scope. The one-step synthesis of natural products such as texamine and balsoxin has been demonstrated via this protocol.

N -Bromosuccinimide as a Brominating Agent for the Transformation of N -H (or N -Benzyl) Ketoaziridines into Oxazoles

Samimi, Heshmat A.,Dadvar, Farkhondeh

, p. 1899 - 1904 (2015/06/30)

A novel procedure for the direct synthesis of 2,5-diaryloxazoles starting from N-H ketoaziridines is described. The method proceeds via the in situ formation of N-bromoketoaziridines in the presence of N-bromosuccinimide followed by the generation of intermediate azomethine ylides. A plausible mechanism for this transformation is proposed.

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